Evelyn (swiftie2000)

Race #4

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Official speed 71.21 wpm (47.69 seconds elapsed during race)
Race Start February 12, 2019 3:39:59pm UTC
Race Finish February 12, 2019 3:40:47pm UTC
Outcome No win (3 of 4)
Opponents 2. charmx (78.34 wpm)
Accuracy 94.0%
Points 53.41
Text #4060102 (Length: 283 characters)

Transformers and most electric motors operate on alternating current. In such devices the flux in the iron changes continuously both in value and direction. The magnetic domains are therefore oriented first in one direction, then the other, at a rate that depends upon the frequency.